Experimental Falsification of Leggett's Non-Local Variable Model
Cyril Branciard, Alexander Ling, Nicolas Gisin, Christian Kurtsiefer,, Antia Lamas-Linares, Valerio Scarani
TL;DR
This paper introduces a new family of inequalities to test Leggett's non-local model against quantum physics, and experimentally falsifies Leggett's model, supporting quantum predictions without extra assumptions.
Contribution
It presents a novel set of inequalities for testing non-local hidden variable models and provides experimental evidence falsifying Leggett's non-local model.
Findings
Experimental data falsify Leggett's non-local model
Results align with quantum physics predictions
Inequalities can be tested without additional assumptions
Abstract
Bell's theorem guarantees that no model based on local variables can reproduce quantum correlations. Also some models based on non-local variables, if subject to apparently "reasonable" constraints, may fail to reproduce quantum physics. In this paper, we introduce a family of inequalities, which allow testing Leggett's non-local model versus quantum physics, and which can be tested in an experiment without additional assumptions. Our experimental data falsify Leggett's model and are in agreement with quantum predictions.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.